If the trip of overload branch should cause cascading overload inside the corresponding transmission section

rapid overload control should be executed within the time delay of overload protection. The protected object is the whole transmission section

and it is ensured that no branch in the section will be overloaded while power flow of the whole section is decreased. The calculation of integrative sensitivity either neglects normal branches

or is just the algebraic sum of sensitivity of the overload branch and branches near the limit

which cannot reflect the node's capability to alleviate overload on the whole section more reasonably. In addition

prioritization of control nodes

selection of node pairs and constraint conditions of the adjustment amount are still imperfect. Thus

in inheriting the general idea of integrative sensitivity algorithm and making up for the defects

this paper holds that integrative sensitivity is the weighted sum of sensitivity of overload branches and normal branches. Then the classification and operation sequence of control nodes should be determined. And the sensitivity of node to branch and integrative sensitivity are all used to prioritize control nodes. In addition

the principle of ensuring safety of the whole section is added to the selection of node pairs and the power limit of the slack generator is considered. Reverse constraints are added to keep power flow from increasing reversely with too much adjustment. The rapidity and validity of the proposed algorithm is verified by calculation results of a certain actual system.